French people might enjoy horse meat every now and again, but the British, as a rule, do not. Nor do the Irish. And they certainly do not enjoy the idea that their juicy cow hamburger is actually a juicy horseburger. But when the Food Safety Authority of Ireland tested a bunch of burgers for DNA contents, it found not only traces of pig DNA in a bunch of cowburgers, but burgers that were 29 percent horse meat.

No one’s sure quite how this happened. The pig DNA’s easy to explain: Pork and beef get processed in the same facility, and some pig particles sneak into the beef. But the horse meat? Ireland’s agriculture minister said that at one processor in Northern Ireland, “an imported additive used to make the burger” had horse meat in it. (Sounds a little pink slimy to us.)

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